shower vs rain

shower and rain both are nouns.

Word	Noun	Adjective	Verb	Adverb
shower	Yes	No	Yes	No
rain	Yes	No	Yes	No

As nouns, rain is a hypernym of shower; that is, rain is a word with a broader meaning than shower:

Other hypernyms of shower include rainfall.

As verbs, rain is a hypernym of shower; that is, rain is a word with a broader meaning than shower:

Other hypernyms of shower include rain down.

shower (noun)	rain (noun)
washing yourself by standing upright under water sprayed from a nozzle	anything happening rapidly or in quick successive
a plumbing fixture that sprays water over you	water falling in drops from vapor condensed in the atmosphere
a sudden downpour (as of tears or sparks etc) likened to a rain shower	drops of fresh water that fall as precipitation from clouds
a party of friends assembled to present gifts (usually of a specified kind) to a person
a brief period of precipitation
someone who organizes an exhibit for others to see

shower (verb)	rain (verb)
take a shower; wash one's body in the shower	precipitate as rain
provide abundantly with
spray or sprinkle with
expend profusely; also used with abstract nouns
rain abundantly